EP 0642471 B1 19990210 - METHOD FOR FERMENTATION OF ESPECIALLY HIGHLY VISCOUS SUBSTRATES AND MEANS FOR BLENDING AIR INTO THE SUBSTRATE
Title (en)
METHOD FOR FERMENTATION OF ESPECIALLY HIGHLY VISCOUS SUBSTRATES AND MEANS FOR BLENDING AIR INTO THE SUBSTRATE
Title (de)
VERFAHREN ZUR GÄRUNG VON BESONDERS ZÄHFLÜSSIGEN SUBSTRATEN UND VORRICHTUNG FÜR DIE EINMISCHUNG VON LUFT IN DAS SUBSTRAT
Title (fr)
PROCEDE POUR LA FERMENTATION DE SUBSTRATS PARTICULIEREMENT TRES VISQUEUX ET DISPOSITIF POUR INTRODUIRE DE L'AIR A MELANGER DANS LE SUBSTRAT
Publication
Application
Priority
- SE 9200478 W 19920626
- SE 9102019 A 19910628
Abstract (en)
[origin: WO9300302A1] A method for fermentation of especially highly viscous substrate is carried through with a controlled mixing of air. The addition of air takes place in two steps, where in the first step a small amount of substrate is mixed with a larger amount of air such that a foam containing air bubbles is formed. In the second step the foam is distributed and mixed into the substrate in a mixing zone, at which very small air bubbles are formed. The rising speed of the bubbles is so low that the degree of utilization of oxygen in the added air is above 20 %. An arrangement for addition of air in highly viscous substrate comprises a tube (1) for addition of air to a rotating foam forming means (2) which is submerged in the substrate in a fermentation tank. The means comprises two elements where at least one of the elements has a side with a structure with lowered and/or raised parts. The elements are arranged to be movable in a transversal way in relation to each other with a mutual distance corresponding to the desired size of the liquid lamella. The spaces which are present in the lowered parts in the structure are connected to the tube for addition of air and surrounding substrate.
IPC 1-7
IPC 8 full level
B01F 3/04 (2006.01); B01F 7/00 (2006.01); B01F 7/16 (2006.01); C02F 3/12 (2006.01); C02F 3/20 (2006.01); C05F 3/00 (2006.01); C12M 1/06 (2006.01)
CPC (source: EP)
B01F 23/2331 (2022.01); B01F 23/23311 (2022.01); B01F 23/23314 (2022.01); B01F 23/235 (2022.01); B01F 27/271 (2022.01); B01F 27/2714 (2022.01); B01F 27/812 (2022.01); C02F 3/1284 (2013.01); C02F 3/20 (2013.01); C05F 3/00 (2013.01); C12M 27/04 (2013.01); B01F 27/115 (2022.01); B01F 27/2712 (2022.01); Y02A 40/20 (2017.12); Y02P 20/145 (2015.11); Y02W 10/10 (2015.05)
Designated contracting state (EPC)
DE DK FR NL SE
DOCDB simple family (publication)
WO 9300302 A1 19930107; DE 69228428 D1 19990325; DE 69228428 T2 19990624; DK 0642471 T3 19990920; EP 0642471 A1 19950315; EP 0642471 B1 19990210; FI 108349 B 20020115; FI 935876 A0 19931227; FI 935876 A 19931227; NO 304825 B1 19990222; NO 934827 D0 19931227; NO 934827 L 19940210; PL 170206 B1 19961129; SE 469073 B 19930510; SE 9102019 D0 19910628; SE 9102019 L 19921229
DOCDB simple family (application)
SE 9200478 W 19920626; DE 69228428 T 19920626; DK 92914334 T 19920626; EP 92914334 A 19920626; FI 935876 A 19931227; NO 934827 A 19931227; PL 30194892 A 19920626; SE 9102019 A 19910628